To determine the taxable employment income and the employment income tax liability of each employee, we need to consider the basic salary, overtime hours, overtime duration, and other employment benefits.

1. Abduljebber Mohammed: - Basic salary: Br 4,200 - Overtime hours: 10 - Overtime duration: 6:00pm to 10:00pm - Transport allowance: Br 1,000

Taxable Employment Income: Basic salary + Overtime pay + Transport allowance = Br 4,200 + (10 * hourly rate * overtime duration) + Br 1,000 = Br 4,200 + (10 * hourly rate * 4) + Br 1,000 = Br 4,200 + (10 * hourly rate * 4) + Br 1,000

Employment Income Tax Liability: To calculate the employment income tax liability, we need to use the tax rates currently in force in Ethiopia. The tax rates for employment income are progressive, meaning the tax rate increases as the income increases.

1. Demissie Eniyew: - Basic salary: Br 3,800 - Overtime hours: 16 - Overtime duration: 10:00pm to 6:00am - Transport allowance: Br 500

Taxable Employment Income: Basic salary + Overtime pay + Transport allowance = Br 3,800 + (16 * hourly rate * overtime duration) + Br 500 = Br 3,800 + (16 * hourly rate * 8) + Br 500

Employment Income Tax Liability: Calculate the tax liability using the tax rates currently in force in Ethiopia.

1. Gezhahegn Meshesha: - Basic salary: Br 1,600 - Overtime hours: 10 - Overtime duration: Weekly rest days - Transport allowance: Br 500

Taxable Employment Income: Basic salary + Overtime pay + Transport allowance = Br 1,600 + (10 * hourly rate * overtime duration) + Br 500 = Br 1,600 + (10 * hourly rate * 0) + Br 500

Employment Income Tax Liability: Calculate the tax liability using the tax rates currently in force in Ethiopia.

For the production laborers, we need to consider their monthly salary and overtime pay for night shifts.

1. Abera Dinkayehu: - Monthly salary: Br 800 - Monthly overtime for night shift: Br 200

Taxable Employment Income: Monthly salary + Monthly overtime pay = Br 800 + Br 200

Employment Income Tax Liability: Calculate the tax liability using the tax rates currently in force in Ethiopia.

1. Alelign Yimer: - Monthly salary: Br 800 - Monthly overtime for night shift: Br 200

Taxable Employment Income: Monthly salary + Monthly overtime pay = Br 800 + Br 200

Employment Income Tax Liability: Calculate the tax liability using the tax rates currently in force in Ethiopia.

1. Alemayehu Seboka: - Monthly salary: Br 800 - Monthly overtime for night shift: Br 200

Taxable Employment Income: Monthly salary + Monthly overtime pay = Br 800 + Br 200

Employment Income Tax Liability: Calculate the tax liability using the tax rates currently in force in Ethiopia.

1. Baheru Ayele: - Monthly salary: Br 800 - Monthly overtime for night shift: Br 200

Taxable Employment Income: Monthly salary + Monthly overtime pay = Br 800 + Br 200

Employment Income Tax Liability: Calculate the tax liability using the tax rates currently in force in Ethiopia.

Please note that the specific tax rates and calculations may vary depending on the tax laws currently in force in Ethiopia. It is recommended to consult the relevant tax authorities or a tax professional for accurate and up-to-date information.